About 60% of the world's railroad tracks use the standard mm (4 ft 8 1'2 in) gauge today. The other 40% use either a narrow gauge or a broad gauge.The gauge wider than mm is called the broad gauge, including mm, mm, mm, etc. The gauge narrower than mm is called the narrow gauge, including mm, mm, 762mm, 600mm, etc.
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About the origin of the standard track gauge, some believed it originated from the wheel spacing of ancient Roman chariots. However, this conclusion is very controversial. It's more likely that the choice of this width is arbitrary.
The standard gauge was proposed by the United Kingdom. George Stephenson, a British engineer who designed and built the Stockton and Darlington Railway, proposed a gauge of and successfully persuaded the train manufacturer to produce locomotives and vehicles with a gauge of 1,435 mm. Stephenson's successful design of the railway is an object that many people imitate. It also makes this gauge popular. In , the British Royal Commissioner suggested using as the standard gauge. In , the British Parliament passed a bill requiring all railways in the future to use standard gauges.
In the early days of rail travel, there was no universal standard for track gauges. Many engineers, private companies and countries would simply build tracks to their designs. Often train tracks were built to link neighbouring towns together or designed for private use. Since these tracks didn't need to connect, there was little need to standardize. Some countries chose not to use the standard gauge for political reasons such as to avoid being invaded by other countries.
It is also worth remembering that replacing or regauging track is a pretty expensive affair. For this reason, it is not unusual to find a mixture of gauges in use in countries where converting gauges is not necessary.
Since the emergence of railways in the 19th century, there has been debate about which gauge is the best. From a modern point of view, there is no obvious advantage in performance of wide or narrow gauge.
1. The heaviest truck in the world can run on standard gauge rails in the United States and Australia. The broad gauge does not necessarily carry more weight.
2. High-speed railways use standard gauges, and broad gauges are not necessarily faster.
3. Trains on narrow gauge (mm) railways in Queensland, Australia and South Africa are still very heavy. Narrow gauges do not necessarily carry less load.
4. The price difference between the standard-gauge light railway and the narrow-gauge railway is not much different.
5. Narrow gauge railways can also be built to reach the same load capacity as standard gauge railway tracks.
Only when narrow-gauge railways less than 3 feet will cost slightly less than standard gauges. However, the carrying capacity of this type of gauge is limited, and it is usually only used on mountain railways with limited carrying capacity.
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Rail gauge rod is a specially designed member bar used to join the 2 steel rails on both sides, so as to protect them from tilting and keep them in certain rail gauge. Rail gauge rod is also called gauge tie rod and gauge tie bar.
As an experienced rail gauge rod manufacturer, our products is applicable to 56-½" track and rails of 60-140 lbs, with both insulated and non-insulated type. Our products has obtained ISO certification and CRCC authorization. In addition, we manufactured gauge tie rods with the length of 600mm, 762mm, 900mm, mm to be applied in UIC and BS rails.
Standard gauge rods with 2 ends is constituted by 1pcs rod, 4pcs iron card, 4pcs flat washer, 4pcs nuts, 4pcs spring washer. It has insulated and non-insulated 2 types. meanwhile, we are ready to provide customized design according to clients' sketch and specific requirement.
AGICO can provide you with rail gauge rod with high intensity, durability and chemical stability, which is easy to install and maintain.
Rail gauge rod plays an important role in rails' lateral stabilization and keeping rail distance. It is common to see some railways with track circuit. Under such circumstance, rail gauge rods made of high insulation resistance materials are necessary to separate circuit between the 2 rails. If the rail gauge rod is in absence, the rail gauge may be biased and can cause derailment or overturn of the train.
Rail rod gauge has 2 clamping device at both ends to fix the rail track, and a rod in the middle constraining the rail gauge to a certain length, thus preventing them from sliding.
Rail gauge rods are especially important in weaker parts of the rail, such as sharp curves, turnout, connection and temporary tracks. They help relieve longitudinal tension and maintain regular gauge of the track.
If the traffic intensity on a track is larger, it's better to have a wider rail gauge than normal.
To connect poor areas with the outside developed world, narrow gauges are applied in these areas.
Train speed is determined by the diameter of wheel, which is constrained by the rail gauge. Usually, the wheel diameter is 0.75 times of the gauge, so the train speed is in proportion to the gauge width. Under such condition, B.G track is superior than M.G and N.G track for trains with higher speed.
Narrow gage is advisable in mountain areas, for it is more flexible and can be placed on small curves. This is why some long railways with the length of thousands of kilometers has the gauge as narrow as 610mm.